Sums of distinct powers of 6.

Terms

a(0) =0a(1) =1a(2) =6a(3) =7a(4) =36a(5) =37a(6) =42a(7) =43a(8) =216a(9) =217a(10) =222a(11) =223a(12) =252a(13) =253a(14) =258a(15) =259a(16) =1296a(17) =1297a(18) =1302a(19) =1303a(20) =1332a(21) =1333a(22) =1338a(23) =1339a(24) =1512a(25) =1513a(26) =1518a(27) =1519a(28) =1548a(29) =1549